Deborah Phelps, the mother of Michael Phelps of the U.S., covers his mouth as he talks to her and his sister Hilary (R), and his girlfriend Nicole Johnson (2nd L) looks on, after the medal ceremony for the men's 4 X 200m freestyle relay final at the 14th FINA World Championships in Shanghai July 29, 2011. REUTERS/Christinne Muschi

Deborah Phelps, the mother of Michael Phelps of the U.S., covers his mouth as he talks to her and his sister Hilary (R), and his girlfriend Nicole Johnson (2nd L) looks on, after the medal ceremony for the men's 4 X 200m freestyle relay final at the 14th FINA World Championships in Shanghai July 29, 2011. REUTERS/Christinne Muschi